When Ravana dethroned Kubera and crowned himself King of Lanka, a disgusted Vishrava disowned his demonic family and returned to Ilavida for good.

When Ravana abducted Sita, she ordered Ravana to return Sita to her husband Rama, but he disobeyed her orders. Ravana threw Vibhishana out of Lanka as he opposed Ravana for abducting Sita. Kaikesi had ordered him to go and fight on Rama's side.